Maintenance; Safety Instructions; General; Lever - ABB PME120-AI Service Instruction

8 PME120-AI / PME120-AN (Contrac) ELECTRICAL ROTARY ACTUATOR | SEI/PME120-EN REV. A

5 Maintenance

Safety instructions

WARNING
Risk of injury due to live parts!
Risk of death or serious injuries due to electricity and
unexpected machine movements. In automatic mode the
motor is always under power, even at standstill.
• When working on the actuator or the related subassembly,
switch off the supply voltage for the electronic unit and
separate anti-condensation heater (option), and take
precautions to prevent unintentional switch-on.
Repair and maintenance activities may only be performed by
authorized customer service personnel.
When replacing or repairing individual components, use original
spare parts.

General

Contrac actuators feature a robust construction. As a result,
they are highly reliable and require minimal maintenance. The
maintenance intervals depend upon the effective load and are
therefore not specified here.
The built-in microprocessor evaluates the actual load factors
(e.g. torques, forces, temperatures, etc.) and derives the
remaining operating time until the next routine maintenance is
required.
Use the configuration program to view this information.
Apart from the load dependent maintenance intervals
determined by the microprocessor we recommend routine
maintenance at least every 10 years.
The following description of the maintenance work provide that
the actuator is disconnected from the damper and that all
electrical supply is disconnected.

Lever

Lever removal

Figure 5: Lever mounted on the shaft
Figure 6: Use of draw-off tool for lever removal
In some case it may be useful to detach the linkage bar from the
ball-and-socket-joint, however, it is not absolutely necessary.
Refer to Figure 5 and Figure 6 for the removal procedure!
1. Screw-off the nut on the lever clamping bolt
bolt aside.
2. Put an appropriate draw-off tool
(see Figure 6 for details); make sure that the claws
symmetrically behind the lever and that the bolt tip is on the
shaft center 5 .
3. Put a wrench onto the opposite bolt end and turn the bolt;
4. put the lever carefully aside once it is off the shaft.
1 and put the
2 onto lever 4 and shaft
3 are